A-33, r. 3 - Code of ethics of hearing-aid acousticians

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3.08.02. Fees are fair and reasonable if they are warranted by the circumstances and in proportion to the services rendered. A hearing-aid acoustician must, in particular, take the following factors into account when determining his fees:
(a)  the time spent in carrying out the professional service;
(b)  the complexity and extent of the service;
(c)  the performance of unusual services or services requiring exceptional competence or celerity.
R.R.Q., 1981, c. A-33, r. 2, s. 3.08.02.